Hi Everybody, I am learning sessions in servlet. I am using "Resin" webserver. To understand the session context object I am executing folloing code. ==== Code==== res.setContentType("text/plain"); PrintWriter out = res.getWriter(); // Get the current session object, create one if necessary HttpSession dummySession = req.getSession(true); // Use the session to get the session context HttpSessionContext context=dummySession.getSessionContext(); Enumeration ids = context.getIds(); ==== Code ends=== I am getting null pointer exception on the last statement(i.e. Enumeration ids = context.getIds() . So I came to know that getSessionContext function is not returing a session context object. What I am doing wrong? I will appreciate anybody's help in this regard. Thanks, Srikanth.
William Brogden
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Read the documentation. The getSessionContext method has been deprecated as a security risk. The method is still there but it returns null. Bill ------------------ author of:
Thank you so very much. I have one follow-up question. So sessions management can be done only by cookies and hidden fields? Is there any alternate for session context object? I read some where that whole session concept is depricated from the servlet. Is that true. Once again thank you very much. Regards, Srikanth.
The SessionContext has been deprecated, not the Session.
William Brogden
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Cookies, Hidden Fields and URL Rewriting are the only ways I know of to associate a particular user with a session. HttpSession is still very much a part of the API - it is essential to just about everything. You really should download the servlet and JSP API documents from java.sun.com - Bill
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. So I came to know that getSessionContext function is not returing a session context object. What I am doing wrong? I will appreciate anybody's help in this regard.
